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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Imprimer: 1093-3611
ISSN En ligne: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.2018026367
pages 359-375

NUMERICAL MODELING OF PROCESSES IN A PLASMA REACTOR FOR CONVERSION OF HYDROCARBONS

Aleksandr Liavonchyk
A.V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus
D. Morozov
A.V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus
Vasili Sauchyn
A.V.Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus
Hr. Dalholenka
A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka St., Minsk, 220072, Republic of Belarus

RÉSUMÉ

A combined thermolysis-plasma facility has been designed at the A.V. Luikov Heat and Mass Transfer Institute to treat wastes with a predominant organic part. The aim of this work was to carry out numerical modeling of the processes occurring in a plasma reactor to find optimum parameters of the treatment process for different regimes. A warm-up mode and model mixture (23.4CO2 + 2C6N6 + 3C4H6) conversion mode of the reactor were considered to determine the effect of a number of parameters (radiation influence, soot formation, interaction of soot with radiation, heat losses). Experimental studies of plasma gasification of wastes were carried out. Tire scrap was considered as a model material. It was previously decomposed in a thermolysis reactor into an evaporated volatile hydrocarbon fraction and a solid carbon residue. Only the evaporated fraction was subjected to plasma gasification. Comparison of calculated and experimental data showed that the model correctly describes the qualitative distribution of the temperature field over the volume of the reactor. The influence of radiation heat transfer on the temperature distribution and the effect of heat loss through the side walls of the reactor on the temperature distribution and gas concentrations were shown. It was found that soot formation and its interaction with radiation must be taken into account because of the changes in the distribution of temperature and CO2 concentration. Modeling of the reactor input unit was performed to improve the processes of mixing. The model qualitatively predicts the behavior of the reactor depending on the regime, but it should be improved for quantitative prediction.


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